DE19801518A1 - Endoscopic instrument - Google Patents
Endoscopic instrumentInfo
- Publication number
- DE19801518A1 DE19801518A1 DE19801518A DE19801518A DE19801518A1 DE 19801518 A1 DE19801518 A1 DE 19801518A1 DE 19801518 A DE19801518 A DE 19801518A DE 19801518 A DE19801518 A DE 19801518A DE 19801518 A1 DE19801518 A1 DE 19801518A1
- Authority
- DE
- Germany
- Prior art keywords
- sleeve
- instrument according
- wire
- proximal end
- control panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/06—Biopsy forceps, e.g. with cup-shaped jaws
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/32056—Surgical snare instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22072—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other
- A61B2017/22074—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other the instrument being only slidable in a channel, e.g. advancing optical fibre through a channel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2215—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having an open distal end
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2901—Details of shaft
- A61B2017/2905—Details of shaft flexible
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
- A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
- A61B2017/293—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft with means preventing relative rotation between the shaft and the actuating rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1407—Loop
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1407—Loop
- A61B2018/141—Snare
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Otolaryngology (AREA)
- Surgical Instruments (AREA)
Description
Die Erfindung betrifft ein endoskopisches Instrument, das zur medizinischen oder chirurgischen Behandlung durch den Zangenkanal eines Endoskops geführt werden kann.The invention relates to an endoscopic instrument for medical or surgical treatment through the forceps channel of an endoscope can be.
Allgemein wird ein endoskopisches Instrument wie eine Hochfrequenzschlinge, eine Greifzange oder eine Biopsiezange so betätigt, daß ein betätigtes Teil am distalen Ende einer durch den Zangenkanal hindurchgeführten flexiblen Hülse mit einem Bedienteil am proximalen Ende über einen Betätigungsdraht in der Hülse gesteuert wird.Generally, an endoscopic instrument like a high frequency loop, a grasping forceps or a biopsy forceps operated so that an actuated part on distal end of a flexible sleeve passed through the forceps channel a control unit at the proximal end via an actuating wire in the sleeve is controlled.
Wenn das betätigte Teil nicht auf einen kranken Bereich gerichtet ist, ist dessen Behandlung schwierig. Zum Vermeiden dieses Problems beschreibt das Japani sche Gebrauchsmuster Sho-61-18885 eine Konstruktion, bei der der Betäti gungsdraht relativ zur Hülse drehbar ist, so daß das betätigte Teil am distalen Ende gedreht werden kann. Ferner beschreibt das Japanische Gebrauchsmuster Sho-52-40616 eine Konstruktion, bei der ein Drehmechanismus in das distale En de der Hülse eingebaut ist und damit ein Steuern der Drehrichtung des betätigten Teils am distalen Ende über einen zweiten Betätigungsdraht möglich ist. If the operated part is not aimed at a diseased area, that is Treatment difficult. The Japani describes how to avoid this problem the utility model Sho-61-18885 a construction in which the actuator supply wire is rotatable relative to the sleeve, so that the actuated part on the distal End can be rotated. The Japanese utility model also describes Sho-52-40616 a construction in which a rotating mechanism in the distal En de the sleeve is installed and thus controlling the direction of rotation of the actuated Partly at the distal end via a second actuation wire.
Diese Konstruktionen haben aber die folgenden Nachteile:
Im ersten Fall wird ein weicher verseilter Draht aus vielen Einzeldrähten als Betä
tigungsdraht verwendet, und die Drehung wird nur unzureichend auf das betätigte
Teil übertragen, da der Betätigungsdraht sie dämpft oder absorbiert. Andererseits
führt ein harter verseilter Draht aus wenigen Einzeldrähten oder mit einem Einzel
draht als Betätigungsdraht zu einer fehlerhaften Übertragung der Drehung, da ein
solcher Draht leicht dauerhaft verbogen werden kann.However, these designs have the following disadvantages:
In the first case, a soft stranded wire made of many individual wires is used as the actuator wire, and the rotation is insufficiently transmitted to the operated part because the actuator wire dampens or absorbs them. On the other hand, a hard stranded wire made of a few individual wires or with a single wire as the actuating wire leads to an incorrect transmission of the rotation, since such a wire can easily be bent permanently.
Im letzteren Fall kann das betätigte Teil am distalen Ende auch nur unzureichend gedreht werden, da der Drehmechanismus einem Teil hinzugefügt werden muß, der einen sehr genau arbeitender Mechanismus enthält.In the latter case, the actuated part at the distal end can also be insufficient be rotated because the rotating mechanism has to be added to a part which contains a very precise mechanism.
Es ist Aufgabe der Erfindung, ein endoskopisches Instrument anzugeben, durch das ein betätigtes Teil am distalen Ende einer Hülse je nach Wunsch gedreht werden kann, so daß es direkt auf einen zu behandelnden erkrankten Bereich gerichtet werden kann.It is an object of the invention to provide an endoscopic instrument by which rotates an actuated part at the distal end of a sleeve as desired can be so that it is directly on a diseased area to be treated can be directed.
Die Erfindung löst diese Aufgabe durch die Merkmale des Patentanspruchs 1. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.The invention solves this problem by the features of claim 1. Advantageous further developments are the subject of the subclaims.
Die Erfindung wird im folgenden an Hand der Zeichnungen näher erläutert. Darin zeigen:The invention is explained in more detail below with reference to the drawings. In this demonstrate:
Fig. 1 den Längsschnitt eines endoskopischen Instruments, Fig. 1 is a longitudinal section of an endoscopic instrument,
Fig. 2 eine perspektivische Darstellung des Instruments nach Fig. 1, Fig. 2 is a perspective view of the instrument of Fig. 1,
Fig. 3 einen vergrößerten Teilschnitt des distalen Endes des Instruments nach Fig. 1, Fig. 3 is an enlarged partial section of the distal end of the instrument of Fig. 1,
Fig. 4 ein Beispiel für den Einsatz des endoskopischen Instruments, Fig. 4 shows an example of the use of the endoscopic instrument,
Fig. 5 den Längsschnitt des distalen Endes eines weiteren endoskopi schen Instruments, Fig. 5 is a longitudinal section of the distal end of another rule Endoskopi Instruments,
Fig. 6 die Seitenansicht eines weiteren endoskopischen Instruments, Fig. 6 is a side view of a further endoscopic instrument,
Fig. 7 die Seitenansicht eines weiteren endoskopischen Instruments, Fig. 7 is a side view of a further endoscopic instrument,
Fig. 8 die Seitenansicht des distalen Endes eines weiteren endoskopi schen Instruments, Fig. 8 is a side view of the distal end of another rule Endoskopi Instruments,
Fig. 9 die Seitenansicht eines Endoskops, durch das die Hülse des in Fig. 1 gezeigten Instruments hindurchgeführt ist, Fig. 9 is a side view of an endoscope through which the sleeve of the instrument shown in Fig. 1 is passed,
Fig. 10 die Seitenansicht einer durch ein Endoskop hindurchgeführten Hülse in mäanderförmig gebogenem Zustand, Fig. 10 shows the side view of a guided through an endoscope sheath in meandering bent state,
Fig. 11 den Einsatz eines Endoskops zur Behandlung des absteigenden Dickdarms, Fig. 11 shows the use of an endoscope for the treatment of the descending colon,
Fig. 12 die Seitenansicht einer durch das Endoskop hindurchgeführten Hülse mit einer Schleifenbildung und rechtwinklig abgebogenem di stalen Ende, und Fig. 12 is a side view of a sleeve passed through the endoscope with a loop and a right-angled di stalen end, and
Fig. 13 die Einsatz des Endoskops zur Behandlung des Sigmaabschnitts des Dickdarms. Fig. 13 shows the use of the endoscope for the treatment of Sigma portion of the colon.
In Fig. 1 und 2 ist eine Hochfrequenzschlinge als Beispiel eines endoskopischen Instruments dargestellt. Ein Betätigungsdraht 2 läuft durch eine flexible Hülse 1 und kann in ihr vor- und rückwärts bewegt werden. Die flexible Hülse 1 kann lös bar in den Zangenkanal eines Endoskops eingesetzt werden.In Fig. 1 and 2, a high frequency snare is shown as an example of an endoscopic instrument. An actuating wire 2 runs through a flexible sleeve 1 and can be moved back and forth in it. The flexible sleeve 1 can be used in the forceps channel of an endoscope.
Die Hülse 1, deren Querschnitt in Fig. 3 gezeigt ist, wird so hergestellt, daß ein Netzschlauch 1c aus verflochtenen feinen Edelstahldrähten zwischen Rohre 1a und 1b eingelagert und mit ihnen verschweißt wird, wobei innere und äußere Schichten aus Kunstharz wie Tetrafluorethylen vorgesehen werden. Die Hülse 1 gewährleistet also nicht nur eine insgesamt weiche und flexible Struktur, sondern hat auch ausgezeichnete Bewegungsfolgeeigenschaften, wenn ein am proximalen Ende erzeugtes Drehmoment auf das distale Ende ohne wesentliche Dämpfung zu übertragen ist, auch wenn die Hülse sehr lang und mäanderförmig gebogen ist. The sleeve 1 , the cross section of which is shown in FIG. 3, is produced in such a way that a mesh tube 1 c made of interwoven fine stainless steel wires is stored between tubes 1 a and 1 b and welded to them, with inner and outer layers of synthetic resin such as tetrafluoroethylene being provided will. The sleeve 1 thus not only ensures an overall soft and flexible structure, but also has excellent sequence properties when a torque generated at the proximal end can be transmitted to the distal end without substantial damping, even if the sleeve is very long and meandering.
Wenn die Hülse 1 durch den weitgehend geraden Zangenkanal eines Endoskops 100 wie in Fig. 9 hindurchgeführt wird (die Länge zwischen distalem und proxima lem Ende des Kanals ist 1800 mm, der Innendurchmesser des Kanals ist 3,5 mm, und die Innenwand des Kanals besteht aus PTFE), so muß die Hülse 1 eine sol che Drehfolgeeigenschaft haben, daß ein Drehmoment von mindestens 100 gcm am proximalen Ende ein glattes und nachlauffreies Drehen am distalen Ende der Hülse 1 zur Folge hat. Dies bedeutet, daß die Hülse 1 in diesem Fall eine Bewe gungsfolgeeigenschaft haben muß, durch die das Drehmoment von mindestens 100 gcm am proximalen Ende der Hülse auf das distale Ende ohne wesentliche Dämpfung übertragen wird.If the sleeve 1 is passed through the largely straight forceps channel of an endoscope 100 as in FIG. 9 (the length between the distal and proximal end of the channel is 1800 mm, the inside diameter of the channel is 3.5 mm, and the inside wall of the channel exists made of PTFE), the sleeve 1 must have such a rotational sequence property that a torque of at least 100 gcm at the proximal end results in a smooth and lag-free turning at the distal end of the sleeve 1 . This means that in this case the sleeve 1 must have a movement-following property by which the torque of at least 100 gcm at the proximal end of the sleeve is transmitted to the distal end without substantial damping.
Bei einem anderen, in Fig. 10 gezeigten Fall, der die Verwendung des Endoskops 100 zur Behandlung des absteigenden Dickdarms 110 gemäß Fig. 11 simuliert muß die Hülse 1 eine solche Bewegungsfolgeeigenschaft haben, daß ein Drehmoment von mindestens 120 gcm am proximalen Ende der Hülse 1 ein glat tes und nachlauffreies Drehen am distalen Ende der Hülse 1 zur Folge hat.In another case, shown in FIG. 10, which simulates the use of the endoscope 100 for the treatment of the descending colon 110 according to FIG. 11, the sleeve 1 must have a movement sequence property such that a torque of at least 120 gcm at the proximal end of the sleeve 1 a smooth and smooth rotation on the distal end of the sleeve 1 results.
Ein weiterer in Fig. 12 gezeigter Fall simuliert die Verwendung des Endoskops 100 zur Behandlung am sigmaförmigen Abschnitt des Dickdarms 120 gemäß Fig. 13. Hier muß die Hülse 1 eine solche Bewegungsfolgeeigenschaft haben, daß ein Drehmoment von mindestens 250 gcm am proximalen Ende der Hülse 1 ein glattes und nachlauffreies Drehen am distalen Ende der Hülse 1 zur Folge hat.Another case shown in FIG. 12 simulates the use of the endoscope 100 for treatment on the sigma-shaped section of the large intestine 120 according to FIG. 13. Here, the sleeve 1 must have a movement sequence property such that a torque of at least 250 gcm at the proximal end of the sleeve 1 a smooth and lag-free turning at the distal end of the sleeve 1 results.
Am distalen Ende des Betätigungsdrahtes 2 ist ein Schlingendraht (betätigtes Teil) 3 befestigt, mit dem eine Schleife gebildet ist. Dieser Schlingendraht 3 wird geschlossen, wenn er mit dem Betätigungsdraht 2 in die Hülse 1 gezogen wird. Er wird geöffnet und bildet dann eine Schlinge durch eigene Elastizität, wenn er aus dem distalen Ende der Hülse 1 herausgeschoben wird.At the distal end of the actuation wire 2 , a loop wire (actuated part) 3 is attached, with which a loop is formed. This loop wire 3 is closed when it is pulled into the sleeve 1 with the actuating wire 2 . It is opened and then forms a loop by its own elasticity when it is pushed out of the distal end of the sleeve 1 .
Gemäß Fig. 1 und 2 ist das proximale Ende der Hülse 1 mit einem Bedienungs körper 11 über eine Überwurfmutter 9 verbunden. Der Bedienungskörper 11 hat die Form einer Stange, deren Längsachse mit der verlängerten Mittellinie der Hülse 1 zusammenfällt. Ein Schieber 13, an dem das proximale Ende des Betäti gungsdrahtes 2 befestigt ist, kann in einem länglichen Schlitz 12 im Bedienungs körper 11 verschoben werden. According to Fig. 1 and 2, the proximal end of the sleeve 1 is connected to an Operation body 11 via a union nut 9. The operating body 11 has the shape of a rod, the longitudinal axis of which coincides with the elongated center line of the sleeve 1 . A slider 13 , on which the proximal end of the actuation wire 2 is attached, can be moved in an elongated slot 12 in the operating body 11 .
Der Betätigungsdraht 2 ist an dem Schieber 13 mit einer Stellschraube 14 befe stigt, die einen Anschluß für eine Hochfrequenzeinspeisung (nicht dargestellt) hat. Ein Teil der Stellschraube 14 ist in Kontakt mit dem Betätigungsdraht 2, so daß ein Hochfrequenzstrom über den Betätigungsdraht 2 durch die Schlinge 3 fließen kann.The actuating wire 2 is BEFE Stigt on the slide 13 with an adjusting screw 14 , which has a connection for a high-frequency feed (not shown). A part of the adjusting screw 14 is in contact with the actuating wire 2 , so that a high-frequency current can flow through the loop 3 through the actuating wire 2 .
Ein Daumenring 16 ist am proximalen Ende des Bedienungshauptkörpers 11 vorgesehen. Er kann frei um dessen Achse gedreht werden.A thumb ring 16 is provided at the proximal end of the main operating body 11 . It can be freely rotated around its axis.
Bei der so aufgebauten Hochfrequenzschlinge ist das proximale Ende der Hülse 1 an dem Bedienungskörper 11 unverdrehbar befestigt, während das proximale En de des Betätigungsdrahtes 2 an dem Schieber 13 befestigt ist, der in dem Schlitz 12 des Bedienungskörpers 11 verschoben wird.In the high-frequency loop constructed in this way, the proximal end of the sleeve 1 is non-rotatably fastened to the operating body 11 , while the proximal end of the actuating wire 2 is fastened to the slide 13, which is displaced in the slot 12 of the operating body 11 .
Wie Fig. 2 zeigt, wird der an dem distalen Ende des Betätigungsdrahtes 2 befe stigte Schlingendraht 3 bei Drehen des Bedienungskörpers 11 um seine Achse zusammen mit der Hülse 1 mitgeführt.As shown in FIG. 2, the loop wire 3 attached to the distal end of the actuating wire 2 is carried along with the sleeve 1 when the operating body 11 is rotated about its axis.
Fig. 4 zeigt die Hochfrequenzschlinge zusammen mit einem Endoskop bei der Benutzung. Die Hochfrequenzschlinge wird in den Zangenkanal des Endoskops 90 zur Chirurgiebehandlung, beispielsweise zum Entfernen eines Polypen 100 aus dem Dickdarm, eingeführt. Eine Hochfrequenzspeiseleitung ist mit 91 be zeichnet. Fig. 4 shows the high frequency loop together with an endoscope in use. The high-frequency loop is inserted into the forceps channel of the endoscope 90 for surgical treatment, for example for removing a polyp 100 from the large intestine. A high-frequency feed line is marked with 91 be.
Wie Fig. 4 zeigt, werden die Hülse 1 und der Schlingendraht 3 gedreht und folgen der Drehung des Bedienungskörpers 11 bzw. der Hülse 1, wenn der Benutzer den Daumen seiner linken Hand in den Daumenring 16 einführt und den Bedienungs körper 11 oder die Hülse 1 mit der rechten Hand dreht.As shown in Fig. 4, the sleeve 1 and the loop wire 3 are rotated and follow the rotation of the operating body 11 or the sleeve 1 when the user inserts the thumb of his left hand into the thumb ring 16 and the operating body 11 or the sleeve 1st turns with the right hand.
Das Einstellen des Schlingendrahtes 3 für die beste Ausrichtung am Polypen 100 und anschließendes Umschlingen des Polypen 100 sowie Speisung des Schlin gendrahtes 3 mit Hochfrequenzstrom bewirkt ein Abschneiden des Polypen 100.The adjustment of the loop wire 3 for the best alignment on the polyp 100 and subsequent looping of the polyp 100 and feeding the loop wire 3 with high-frequency current causes the polyp 100 to be cut off.
Fig. 5 zeigt eine weitere vorzugsweise Konstruktion der Hülse 1 mit ausgezeich neten Dreheigenschaften. Die Hülse besteht aus drei Schichten eng gewundener Schläuche 1d, 1e und 1f, wobei die Windungsrichtungen einander abwechseln. Fig. 5 shows a further preferred construction of the sleeve 1 with excellent rotation properties. The sleeve consists of three layers of tightly wound hoses 1 d, 1 e and 1 f, the winding directions alternating with one another.
Die Hülse 1 kann unterschiedliche Konstruktionen haben. Beispielsweise kann die Außenfläche eines Rohrs aus Doppelspiralen mit entgegengesetztem Dreh sinn von einem Netzschlauch eingeschlossen sein, der wiederum in einem flexi blen Rohr sitzt.The sleeve 1 can have different constructions. For example, the outer surface of a tube made of double spirals with opposite rotation sense can be enclosed by a mesh tube, which in turn is seated in a flexible tube.
Ferner kann diese Konstruktion mit Hochfrequenzschlinge bei verschiedenen en doskopischen Instrumenten eingesetzt werden, beispielsweise bei einer Biop siezange der in Fig. 6 gezeigten Art, einer körbchenartigen Greifzange nach Fig. 7, einer Schnabelzange nach Fig. 8, einem nicht dargestellten Hochfrequenz- Schneidwerkzeug usw.Furthermore, this construction with high-frequency loop can be used with various en doscopic instruments, for example with a biopsy forceps of the type shown in FIG. 6, a basket-type gripping forceps according to FIG. 7, a beak-type pliers according to FIG. 8, a high-frequency cutting tool, not shown, etc.
In Fig. 6 ist das distale betätigte Teil der Biopsiezange mit 23 bezeichnet und hat einen Zangenteil, der über einen Gelenkmechanismus mit dem Betätigungsdraht 2 geschlossen und geöffnet wird. In Fig. 7 und 8 sind betätigte Endteile 33 und 43 für die Körbchenzange und die Schnabelzange dargestellt, die jeweils durch ei gene Elastizität gedehnt und durch Einziehen in die Hülse 1 zusammengezogen werden.In Fig. 6, the distally operated part of the biopsy forceps is designated 23 and has a forceps part which is closed and opened with the actuating wire 2 via a joint mechanism. In Fig. 7 and 8 actuated end parts 33 and 43 are shown for the cup tongs and the beak tongs, which are each stretched by egg elasticity and contracted by pulling into the sleeve 1 .
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00614497A JP3417778B2 (en) | 1997-01-17 | 1997-01-17 | Endoscope treatment tool |
JP9-6144 | 1997-01-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19801518A1 true DE19801518A1 (en) | 1998-07-23 |
DE19801518B4 DE19801518B4 (en) | 2009-04-09 |
Family
ID=11630331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19801518A Expired - Fee Related DE19801518B4 (en) | 1997-01-17 | 1998-01-16 | Endoscopic instrument |
Country Status (5)
Country | Link |
---|---|
US (1) | US6015381A (en) |
JP (1) | JP3417778B2 (en) |
DE (1) | DE19801518B4 (en) |
DK (1) | DK5098A (en) |
GB (1) | GB2321193B (en) |
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DE10005584B4 (en) * | 1999-02-09 | 2007-06-06 | Pentax Corp. | Biopsy forceps for an endoscope |
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-
1998
- 1998-01-13 US US09/006,166 patent/US6015381A/en not_active Expired - Fee Related
- 1998-01-15 DK DK199800050A patent/DK5098A/en not_active Application Discontinuation
- 1998-01-16 DE DE19801518A patent/DE19801518B4/en not_active Expired - Fee Related
- 1998-01-16 GB GB9800974A patent/GB2321193B/en not_active Expired - Fee Related
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DE10005584B4 (en) * | 1999-02-09 | 2007-06-06 | Pentax Corp. | Biopsy forceps for an endoscope |
Also Published As
Publication number | Publication date |
---|---|
DE19801518B4 (en) | 2009-04-09 |
GB2321193B (en) | 2001-02-07 |
GB9800974D0 (en) | 1998-03-11 |
DK5098A (en) | 1998-07-18 |
GB2321193A (en) | 1998-07-22 |
JP3417778B2 (en) | 2003-06-16 |
JPH10192286A (en) | 1998-07-28 |
US6015381A (en) | 2000-01-18 |
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Owner name: PENTAX CORP., TOKIO/TOKYO, JP |
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